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Finding the Fourth Proportional to 67,216.30, 100,824.45 and 56,718.70

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Solution

The fourth proportional to 67,216.30, 100,824.45 and 56,718.70 is: 85,078.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,216.30 : 100,824.45 = 56,718.70 : x
  2. Step 2: Convert to fraction form
    67,216.30/100,824.45 = 56,718.70/x
  3. Step 3: Cross multiply
    67,216.30x = 100,824.45 × 56,718.70
  4. Step 4: Simplify right side
    67,216.30x = 5,718,631,732.22
  5. Step 5: Solve for x
    x = 5,718,631,732.22/67,216.30
  6. Step 6: Final answer
    x = 85,078.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.